[INFO] updating cached repository https://github.com/matthiasbeyer/task-rain [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a711d9adcf3825b2501206e1a0216e3fafb348ee [INFO] checking matthiasbeyer/task-rain against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiasbeyer%2Ftask-rain" "/workspace/builds/worker-6/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/matthiasbeyer/task-rain on toolchain 45d050cde277b22a755847338f2acc2c7b834141 [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/matthiasbeyer/task-rain [INFO] finished tweaking git repo https://github.com/matthiasbeyer/task-rain [INFO] tweaked toml for git repo https://github.com/matthiasbeyer/task-rain written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/matthiasbeyer/task-rain already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 72165b152e7031306207d3aefd98bee6a19b43bbf9399b649fc892e59e7169a8 [INFO] running `"docker" "start" "-a" "72165b152e7031306207d3aefd98bee6a19b43bbf9399b649fc892e59e7169a8"` [INFO] [stderr] Checking libc v0.2.30 [INFO] [stderr] Compiling gcc v0.3.54 [INFO] [stderr] Checking num-traits v0.1.40 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Checking cfg-if v0.1.2 [INFO] [stderr] Checking rustc-demangle v0.1.5 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Checking log v0.3.8 [INFO] [stderr] Checking serde v0.9.15 [INFO] [stderr] Checking dtoa v0.4.2 [INFO] [stderr] Checking itoa v0.3.3 [INFO] [stderr] Checking bitflags v0.9.1 [INFO] [stderr] Checking either v1.1.0 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Checking itertools v0.6.2 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Checking time v0.1.38 [INFO] [stderr] Checking term_size v0.3.0 [INFO] [stderr] Checking termion v1.5.1 [INFO] [stderr] Checking atty v0.2.2 [INFO] [stderr] Checking textwrap v0.8.0 [INFO] [stderr] Checking clap v2.26.1 [INFO] [stderr] Checking chrono v0.2.25 [INFO] [stderr] Compiling backtrace-sys v0.1.12 [INFO] [stderr] Compiling serde_codegen_internals v0.14.2 [INFO] [stderr] Compiling serde_derive v0.9.15 [INFO] [stderr] Checking uuid v0.4.0 [INFO] [stderr] Checking serde_json v0.9.10 [INFO] [stderr] Checking task-hookrs v0.3.0 [INFO] [stderr] Checking backtrace v0.3.3 [INFO] [stderr] Checking error-chain v0.11.0 [INFO] [stderr] Checking mowl v1.2.0 [INFO] [stderr] Checking rain v0.3.1 [INFO] [stderr] Checking task-graph v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `time` [INFO] [stderr] --> src/main.rs:42:10 [INFO] [stderr] | [INFO] [stderr] 42 | for (time, group) in tasks.into_iter() { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_time` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:27:17 [INFO] [stderr] | [INFO] [stderr] 27 | let mut file = File::open(filename).expect("Couldn't open file"); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:48:5 [INFO] [stderr] | [INFO] [stderr] 48 | graph.print(); [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `time` [INFO] [stderr] --> src/main.rs:42:10 [INFO] [stderr] | [INFO] [stderr] 42 | for (time, group) in tasks.into_iter() { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_time` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:27:17 [INFO] [stderr] | [INFO] [stderr] 27 | let mut file = File::open(filename).expect("Couldn't open file"); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:48:5 [INFO] [stderr] | [INFO] [stderr] 48 | graph.print(); [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 26.80s [INFO] running `"docker" "inspect" "72165b152e7031306207d3aefd98bee6a19b43bbf9399b649fc892e59e7169a8"` [INFO] running `"docker" "rm" "-f" "72165b152e7031306207d3aefd98bee6a19b43bbf9399b649fc892e59e7169a8"` [INFO] [stdout] 72165b152e7031306207d3aefd98bee6a19b43bbf9399b649fc892e59e7169a8